Concrete-block press.



0. P. HARTMAN & s. R. 000KB.

00110113123 BLOCK PRESS. APPLICATION FILED 1330.13, 1909.

Patented Nov. 22, 1910.

F. HARTMAN &'S. R. 000KB.

CONCRETE BLOCK PRESS.

APPLICATION IILEB n20.1a, 1909.

Patented N0v.22, 1910.

2 SHEETSSHEET 2.

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. TTED STATES PATENT OFFICE.

CLYDE F. HARTMAN AND SAMUEL R. COOKE, OF FORTYFORT, PENNSYLVANIA.

CONCRETE-BLOCK PRESS.

Specification of Letters Patent.

Application filed December 13, 1909.

Patented Nov. 22, 1910.

Serial No. 532,837.

To all whom it may concern:

Be it known that we, CLYDE F. HARTMAN and SAMUEL R. CooKE, citizens of the United States, residing at Fortyfort, in the county of Luzerne and State of Pennsyl- Vania, have invented certain new and useful Improvements in Concrete-Block Presses, of which the following is a specification.

This invention relates to machinery for the making of building blocks, bricks, tiles, and other articles of concrete or the like, and the invention consists in certain specific details of construction whereby the operation is facilitated in that it is rendered automatic in many respects in a manner superior to the means or methods heretofore employed.

For a full understanding of the invention reference is to be had to the following detail description and the accompanying drawings, in which Figure 1 is a side elevation partly broken away, indicating a preferred form of the invention; Fig. 2 is a rear elevation of the same machine; Fig. 3 is a detail view in elevation of certain parts hereinafter described, indicating in dotted lines a change of position of some of the parts; Fig. 4: is a bottom plan view of the table and parts immediately associated therewith.

Throughout the following description and on the several figures of the drawings similar parts are referred to by like reference characters.

Referring to the drawings, at 10 is indi cated any suitable form or construction of supporting frame adapted to stand or'rest upon any suitable foundation. A hopper 11 is supported by standards 12 at the upper portion of the machine and is adapted to receive the concrete or other material to be worked into the finished product. By virtue of the standards 12 which may be of any suitable construction the hopper 11 is supported in a spaced relation from the bed portion 13 of the frame. Each side member 14 of the frame includes a pair of spaced guides 15, to be hereinafter referred to.

At 16 is indicated a table lying substantially in a horizontal plane and movable in Such plane longitudinally upon the bed 13 by any suitable mechanism. The mecha nism for such purpose indicated herein includes a rack 17 made as a part of or connected to the bottom of the table 16 and cooperating therewith is a pinion 18 connected to a shaft 19 journaled for rotation in bearings 20 and 21 and operated as by a handle or crank 22. Connected to and carried by the upper surface of the table is a mold 23, the shape and construction of which will be determined in accordance with the product to be made by the machine. That form indicated herein is designed for the formation of hollow rectangular building blocks and in which a plurality of air spaces are formed. The mold shown includes a front wall 2 1 which may be cast integral with or otherwise rigidly connected to the upper surface of the table 16 and extends upwardly therefrom substantially at a right angle. To the ends of said wall 24 are hmged as at 25 the end members 26 of the mold, said members being adapted to swing outwardly'on the vertical axes constituted by said hinges when it is desired to remove the block from the mold. The bottom 27 of the mold is connected as by bolting to the table 16 and to the rear edge thereof is hinged as at 28 the rear wall 29, substantially parallel to the front wall 24, and when in closed position is adapted to be interlocked with the ends 26 by means of hasps 30. By loosening the hasps the rear wall 29 may be dropped, swinging about the horizontal axes of the hinges 28, and the ends 26 are then free to be swung outwardly. Connected to the front wall 24 as by bolts and slots for adjustment purposes is a out 01$ 31 which is movable with the movements of the table and slides just below the opening or mouth at the bottom of the hopper. When the mold is closed and the table moved forward, or to the right as viewed in Fig. 1, the out off 31 will pass beyond the mouth of the hopper, permitting the material kept supplied in the hopper to flow into the mold filling the same. Upon movement of the table and hopper rearwardly by a reverse operation of the crank 22 the cut ofi will stop the flow of the material from the hopper.

As is shown in. the construction of con accommodate various sizes or forms of cores.

to be used inconnection with molds of different characters adapted to be used in the same machine. The bottom 27 of the mold however will be provided with holes or openings 27" which will conform substantially to the lower ends of the cores when the cores are in operative position. The cores will extend to any desired extent within the mold, usually substantially to the top there of; The cores 32 are connected together preferably by a plate 33 to which is connected a guide 34 extending at its lower end through a yoke 35 connected to and carried by the lower surface of the table 16. The cores are supported in any suitable manner in such'a way that when the table is moved rearwardly beyond thepoint at which the present operation is performed the coreswill automatically be permitted to drop or fall by'gralvity. The means herein shown for this purpose includes a lever 36 below the if cores. and having preferably antifriction connection therewith through a roller 37, said lever being connected to a rock shaft 38 journaled in a bearing 39 on the lower surface of'the table. At the other end of the rock shaft 38 is an elbow lever 40 which lies substantially close to the inner side member 14 opposite the side at which the crank 22 is placed. The lever 40 throughout lts rear portion lies-parallel to and spaced from the lower surface of the table, but at 40 is provided with a bend or elbow and the remaining-portion thereofbetween the elbow and the rock shaft 38 lies normally in an inclined position with respect to the table.

Throughout the forward movement of the table for the purpose of filling the mold and during the present operation the horizontal portion of the lever 40 is held in such a hori zontal position by virtue of a stud 41 carried by the side of the'frame. Said stud may be provided with an antifriction roller 42 if desired. After the present operation'is completed upon further movement of the table and mold rearwardly the inclined portion of the lever 40 slides down or over the roller 42 permitting the lever 36 to release the cores and the cores will drop substantially to the position, indicated in dotted lines in Fig. 3. After the mold has been opened and the cores removed as above indicated the 7 block may-be easily removed from the remaining sections 27 and 24 of the mold. After closing the mold again and locking the same, the movement of the crank 22 to bring the mold again beneath the hopper will automatically cause the levers 3G and 40 to restore the cores to their normal operative position ready for a succeeding operation. After the mold has been filled in the manner above indicated and moved with the table rearwardly from beneath the bottom of the hopper a press follower 43, of suitable form and depth to correspond to the form of the mold and the block to be made, is brought downward forcibly upon the top of the charge, packing the same with sufficient force to meet the requirements of any particular case. The means shown for operating the follower include a pair of slides 44 guided for reciprocation between the pairs of guides 15 of the frame, said slides being connected at their upper ends by any suitable means to the ends of the follower. A rock shaft 45 is journaled for rotation in the lower portion of the frame, such rotation being caused by a-power lever 46 rigidly connected thereto. At each end of the rock shaft is a short crank 47 the outer ends of which are 'connected by pitmen 48 to the aforesaid slides 44. When the rock shaft is rotated the effect of the cranks is to cause reciprocation either upward or downward of the follower 43 in a manner well understood in the art.

From the preceding description it will be understood that the machine may be made in many different specific forms and may be varied with respect to details of construction to a very great extent within the scope of the claims hereinafter claimed.

We claim 1. In a press of the character set forth, the combination of a frame, a table upon the frame, means to reciprocate the table in a horizontal plane with respect to the frame, a mold supported upon the table and carried thereby, a core for the mold movable vertically with respect to the mold, and means to automatically elevate the core during the reciprocation of the table, said means comprising a rock shaft journaled on the table and a pair of levers, one of the levers cooperating with the frame and the other (:0- operating with the core.

2. The hereindescribed press comprising, in combination, a frame including two vertical side members, a stud connected to one of said members and extended therefrom toward the other side member, a table movable transversely to said frame, a mold carried by said table, said mold and table having registering openings, a core movable vertically through said openings into said mold, and means for operating said core simultaneously with the movement of the table, said means including a rock shaft 38 iournaled upon the table, an arm connected to one end of said rock shaft cooperating with said core, another arm connected to the other end of said rock shaft and cooperating With said stud, the latter arm having a portion lying in a plane parallel to the plane of the aforesaid arm and also having a portion at an angle thereto, substantially as and for the purposes set forth.

In testimony whereof We affix our signatures in presence of two Witnesses.

CLYDE F. HARTMAN. SAMUEL R. COOKE. Witnesses:

B. E. SUTLIFF, ALICE SUTLIFF. 

